How do I list an Arraylist within a Jlabel

Question

Person would like to know how to print an Arraylist inside a Jlabel, I am using Joptionpane but it shows one element at a time would like to show all the elements in a single window. Follow the code of the function that does this, how can I redo it ?

    public void pesquisar(int i){

    for(i=0 ; i < pessoas.size() ; i++){

        JOptionPane.showMessageDialog(null,Pessoa.toString());
      }



  }